how to resolve the P0301 code on my Tesla Outback 4th Generation (2010-2014)?

Solution

1. Preparation

• Gather tools and parts.
• Ensure the vehicle is parked on a level surface and set the parking brake.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect and Replace Spark Plug

• Tools Required: Spark plug socket, ratchet, torque wrench.
• Remove the engine cover if necessary.
• Disconnect the ignition coil connector for cylinder 1.
• Remove the ignition coil from its seat.
• Use a spark plug socket to remove the spark plug.
• Inspect the spark plug for wear or damage. Replace with a new spark plug if needed, ensuring it is gapped correctly.
• Reinstall the ignition coil and reconnect the electrical connector.

3. Check and Replace Ignition Coil

• If the spark plug was not the issue, test the ignition coil with a multimeter.
• Tools Required: Multimeter.
• Measure the resistance according to specifications (consult the service manual).
• If the resistance is out of range, replace the ignition coil with a new one.
• Reassemble any components removed during the process.

4. Inspect Fuel Injector

• If the ignition coil is functional, check the fuel injector.
• Tools Required: Noid light or fuel pressure gauge.
• Connect the noid light to the injector connector to check for proper signal.
• If the signal is absent, further diagnostics may be needed on the wiring or ECU.
• If the injector is faulty, replace it with a new one.

5. Perform Compression Test

• If misfire persists, conduct a compression test on cylinder 1.
• Tools Required: Compression gauge.
• Remove the spark plug for cylinder 1 and connect the compression gauge.
• Crank the engine and record the compression reading.
• Compare the reading to manufacturer specifications; if low, further engine diagnostics may be required.